Continental growth during the Early Proterozoic development of Laurentia was related to ____________________ of Archean age cratons
Fill in the blank(s) with correct word
accretion
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The transfer of heat from molecule to molecule within a substance is called ____
A) conduction B) convection C) radiation D) latent energy
Which physical property is responsible for determining how Earth materials separate into interior layers?
A) Density B) Color C) Molecular charge D) Tensile strength
Judge the following sentence according to the criteria given below: Density decreases as temperature increases BECAUSE the molecules lose energy and slow down with increasing temperature
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Why are scientists so interested in the organisms living next to black smokers?
A. The scientists didn't think photosynthesis could occur in such deep water. B. The organisms appear to originate from within mantle and are brought to the surface through convection. C. The entire food web is based on silicon instead of carbon. D. The organisms may represent some of Earth's earliest life forms, or even possible life on other planets.